circPDZD8 negatively correlates with patient prognosis. (A) Kaplan-Meier univariate analysis of overall survival in gastric cancer patients with high (above median) versus low (below median) circPDZD8 levels were shown; P < 0.05 [log-rank test]. (B) The circPDZD8 was examined in gastric cancer tissues with < 3.5 cm (n = 17) and > 3.5 cm (n = 53). (C) The circPDZD8 was examined in gastric cancer tissues in T1-T2 stage (n = 22) and T3-T4 stage (n = 48); *** P < 0.001.